Is the notification system no longer working?  Used to be that if you posted in a thread when additional posts were made after yours you would get a notification.  I am no longer getting notifications.  It started happening about the time you closed a lot of threads due to "technical difficulties" and stated new ones and also there was a red bar across the top stating that you were having technical difficulties.  It has happened at least 3 or 4 times today.

Your notifications may have been reset during recent issues, check them first to see if they are still in place.